Ignition Coil and Iridium Spark Plugs for Genesis G70 (2019-2021) 2.0L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2019-2021 Genesis G70 (IK)

What it Does: The Ignition Coil and Iridium Spark Plug kit replaces worn OEM ignition components on the 2019-2021 Genesis G70 to eliminate misfires under boost and restore uniform combustion efficiency across all cylinders.

The Stock Genesis G70 Ignition Breakdown

The turbocharged Theta II G4KL 2.0L engine exposes primary and secondary ignition hardware to extreme cylinder pressures and heat cycling. Over time, factory coil pack potting suffers internal dielectric breakdown, resulting in micro-arcing and secondary voltage leakage under peak boost. Simultaneously, thermal erosion widens factory plug gaps, demanding excessive dwell time and voltage from the primary circuit. This manifests as hesitation, rough idle, fuel dilution, and check engine lights with misfire codes (P0300–P0304).

The Engineering Solution

This comprehensive tune-up kit delivers four heavy-duty coil-on-plug (COP) units matched with fine-wire iridium spark plugs. The replacement coils utilize reinforced copper windings encapsulated in high-grade dielectric epoxy and oil-resistant silicone boots to resist thermal fatigue. Paired with ultra-fine wire iridium center electrodes that demand significantly lower ionization voltage, this system ensures a concentrated spark discharge, prevents blowout under high manifold pressure, and stabilizes flame front propagation.

What's Included

• 4x Coil-on-Plug Ignition Coils (Black, 4-Pin Blade Connector)
• 4x Fine-Wire Iridium Spark Plugs

Technical Specifications

Compatibility

• 2019-2021 Genesis G70 2.0T (Manual and Automatic transmissions)
• Fits 2.0L Turbocharged L4 models only

Frequently Asked Questions & Fitment Warnings

Does this fit the IK G70?

Yes, this is a direct fit for the 2019-2021 Genesis G70 equipped with the Theta II G4KL 2.0L engine. This kit does not fit models equipped with the 3.3L twin-turbo V6 engine.

Should dielectric grease be used during installation?

Applying a thin film of dielectric grease to the interior lip of the rubber coil boots prevents moisture intrusion and stops the boots from vulcanizing to the ceramic spark plug insulator over time.

The Genesis Calibration Caliber

Engineered to satisfy the exact electrical impedance and thermal tolerances of high-output direct-injected powertrains, ensuring zero check engine lights, smooth idle control, and precise throttle modulation.